Means for lighting gas-lamps



C. F. McDONOUGH.

MEANS FOR LIGHTING GAS LAMPS APPLICATION FILED ocT. 8. 1914.

1 1 93., 1 6 6 Patented All". 1, 1916.

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CHARLES F. MCDONOUGH, 0F CLEVELAND, OHIO.

MEANS FOR LIGHTING GAS-LAMPS.

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Specification of Letters Patent.

Patented Aug. it, 1916.

Application filed October 8, 1914. Serial No. 865,614.

To all whom it may concern:

Be it known that I, CI-iARLns F. MCDON- OUGH, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Means for Lighting Gas-Lamps, of which the fol lowing is a specification.

This invention has reference, broadly, to means for lighting gas burners, and the invention consists in a lighting medium of the pilot type adapted to be employed with'a pair of burners having inverted mantles and located between the said burners and in equal lighting relations with b0th,-all substantially as shown and described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is an elevation of my invention showing a pair of burners and a sectional elevation of the inclosing globe and its surmounted parts. Fig. 2 is a sectional place. on line 2-2, Fig. 1. Fig. 3 is a sectional elevation on line 3-3, Fig. 1, and Fig. 4 is an enlarged sectional elevation of the said lighting medium or pilot light mechanism hereinafter fully described.

The invention as thus shown contemplates the use of a pair of gas burners 2 having outlet openings over which I hang or suspend what are known as drop mantles m. The burner tube 6 is of a substantially T pattern, in this instance, but the shape is less material than the having of two burners disposed substantially as shown, and the mantles are hung on the extremities of the arms thereof and serve the usual purpose of such mantles for incandescent lighting.

The plan of the invention further contemplates the maintenance of starting or pilot lights for both burners, the construction and arrangement being such that a constant gas igniting flame in igniting relation to said burners 2 is maintained. Specifically, the said tube or pipe I) is provided with a suitable mixer at d for the air and gas, and the mixture flows to the gas burners or tips 2 under the usual or other suitable valve control, not shown. Both primary or main burners 2 are supposed to be used at the same time, but valves might be employed to cut out one burner and use only the other. The said gas supply pipe Z) is upright, and a pilot lighting pipe or tube 4 extends along the outside of said pipe b to its top and is secured thereto by means of a collar or band 6 clamped thereon. A burner tip 7 is engaged on the top of said pilot light pipe and has'opposite jet orifices 8 at an upward and outward inclination, so that the gas will issue therefrom in an inclined upward direction and about as indicated by the arrows in Fig. 4. If the said orifices were directly lateral the bowl 0 would deflect the flame upward and give something of the same effect except for the danger of spread ing the lightingflame too much to get sure ignition.

The flame protecting bowl or cup 0 is supported on the upper end of said pipe 4 with the pilot-lighting tip 7 inside thereof near its bottom, and the said bowl is preferably shaped about as seen in the several views and particularly with elevation suflicient to perfectly shield the pilot flame and leads or channels 10 at its sides and rear to guide or direct the pilot flame upward and outward into proximity to the main lamps or burners which are to be ignited thereby. The said leads or channels terminate in lips in proximity to the tops of the said mantles, and they deliver the flame at this point particularly so as not to blacken nor burn out the mantles in their illuminating porti on. Furthermore, the delivery of said pilot lights or lighting flames at or to the tops of the mantles brings the flame to the .points where the gas first begins to escape and hence promotes prompt ignition. Indeed, there are several advantages directly resulting from the somewhat peculiar construction of the bowl 0 and its flame channels, as for example,the maintenance of ablue pilot light instead of a yellow light. I have found by repeated experiments that without the bowl the gas flowing from the jet orifices 8 will burn a yellow flame, but with said bowlconstruction and arranged as above the pilot light burns with a perfectly blue flame, always. Again, the bowl being tightly closed about its bottom and sides and extending to a considerable distance above the said orifices 8 at its upper edge, the pilot flames are protected or shielded from the usually heavy drafts which rush up from beneath about the burners 2 and the said bowl and without protection would endanger said burners. In fact, the depth of the bowl is such as to make it practically impossible to blow out the said burners by ordinary or even extraordinary drafts under stormy conditions of the weather, for it should be understood that the burner shown is designed especially for park and street illumination, and the tube or pipe I) and the burners thereon are to be supported in or by a suitable lamp post generally tubular. It will also be seen that the rear of the bowl is flat where it rests against pipe 6, while the front is curved both downwardly and transversely, and the flame leads 10 are at the rear and sides of the bowl in the angle with the flat back 12. 7

Suitable valves should be provided for controlling the flow of gas through both the pipes Z) and 4E, and a single valve '0 for the pilot lights is shown in Fig. 1. 1 It will be observed that the burner hea on main pipe 5 is plain and contains no auxiliary means for equalizing and mixing the gas therein, and none are needed. If the said head were inverted so as to use upright mantles, the bowl 0 would be carried correspondingly higher and placed opposite the base of the mantles as at present. The globe g and the means operatively associated with the base and top thereof are not of this invention but serve to protect the burners from outside drafts and to promote combus tion .and illumination.

' Of course the pilot lights will serve to ignite the main burners without the mantles, but mantles are used'for brilliant illumination.

The extremities or ends of the burner head'h' have permanently open outlets with lava tips, and the gas ignites in the mantles m and affords the usual incandescent light.

\Vhat I claim is:

l. The construction substantially as described comprising a pair of main burners, in combination with pilot lights between said burners, a bowl containing said lights in the bottom thereof and provided with a flat back portion and curved front and sides, and said sides having lead channels for the pilot flame at the rear and top thereof adjacent to the said main burners.

2. In a gas lamp, a pair of main burners, in combination with a pilot light between said burners and a bowl inclosing said light at bottom and side and open across its top and provided with channels on its inside serving to direct the flame from the said light to the said burners.

3. In a gas lamp, a burner head oil sub stantially T shape having burners at its side terminals, in combination with a pilot light adapted to maintain an igniting flame opposite said burners and a bowl about the bottom and side of said light having a flat back and round side wall serving as a shield to protect the said light against untoward drafts and adapted to direct the flame upward toward said burners.

In testimony whereof I afiix my signature in presence of two witnesses.

- CHARLES F. MoDONOUGI-I.

Witnesses:

F. J. GREEK, M. J. MOCAFFERTY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 1' Patents,

' Washington, D. G. 

